25160.遼東半島晚新生代沉積物磁化率特征及初步解釋

1、遼寧師范大學(xué)碩士學(xué)位論文遼東半島晚新生代沉積物磁化率特征及初步解釋姓名：伏捷申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：第四紀(jì)地質(zhì)學(xué)指導(dǎo)教師：李永化201204遼gl“島晚新生代沉積物磁化率特征及初步解釋CharacteristicofMagneticSusceptibilityandItsPrimarilyInterpretationofLateCenozoicSedimentsofLiaodongPeninsulaAbstractDepositmagn

2、eticsusceptibilityindexmainlydependsuponthecharacteristicsofcontent，varietyandgranularityofthemagneticmineral，thiscouldrecordedandreflectedthecompositeinformationofregionalenvironmentvariationInthispaper，twotypesofsedime

3、ntswhichareslopedeposit(S1～S4sections)andredweatheredcrust(S5～S6sections)werechosenfromLiaodongPeninsulaformagneticsusceptibilitymeasurementResultsshowedUStheverticalvariationcharacteristicsandspatialdistributioncharacte

4、risticsofsedimentsmagneticsusceptibilitysincelateCenozoicinstudyareaTheauthorstriedtogiveapreliminaryinterpretationforthesedimentaryenvironmentandpalaeoclimatevariationinformationbystudyingthemagneticsusceptibilityresult

5、Itisconcludedthat：(1)TheslopedepositsectionsS1～$4chosenfromLiaodongPeninsula，itsaveragevalueofmassmagneticsusceptibilityare717510。8m3／kg，6581x10墻m3／kg，6817x10培m3／kg，1517010sin3／kg，verticalcoefficientsofvariationare2384％、

6、3092％、1650％、3976％andfrequency—dependentmagneticsusceptibilityare1O77％，967％，946％，1036％，verticalcoe銜cientsofvariationare982％、1410％、1227％、946％Theredweatheredcrustsections$5$6alsochosenfromLiaodongPeninsula，itsaveragevalueof

7、massmagneticsusceptibilityare30506x10培m3／kg，47326(10。8m3／kg，verticalcoefficientsofvariationare2671％、3123％andfrequency—dependentmagneticsusceptibilityare1444％1495％verticalcoemcientsofvariationare906％、655％(2)Theaveragevalu

8、eofmassmagneticsusceptibilityandfrequency—dependentmagneticsusceptibilityofS1一S6sectionsinLiaodongPeninsulaareobviouslydifferentandhavespatialdifferentiationphenomenonItreflectsthattherearealmostthesamecontentsofmagnetic

9、mineralandsuperparamagneticferromagneticandmineralultrafinegraininthesedimentoftheslopedeposit(S1一S3sections)Thedeposittime，sedimentsource，depositionalenvironmentareapproximatelyconsistentWhilethecontentofmagneticmineral

10、ishighinslopedepositS4sectionthedeposittimeanddepositionalenvironmentaredifferentfromtheS1S3sectionsThecontentofmagneticmineralandsuperparamagnetieferromagneticandmineralultrafinegrainisveryhighinthesedimentoftheredweath